金达煤业9、10号煤层耦合高应力场回采巷道支护研究

Support of Coupled High Stress Field Mining Roadway in 9#and 10#Coal Seams of Jinda Coal Industry Co.,Ltd.

金达煤业9、 10号煤层属于近距离煤层,上覆9号煤层基本采空,9号煤层的开采活动导致10号煤层顶板的完整性受到了严重的破坏,由于9号煤层开采形成的保护煤柱在其底板的一定范围内形成了集中应力,从而导致10号煤层工作面顶板极易冒落,且支护困难。因此,针对近距离煤层的开采,探讨了耦合高应力场的巷道支护方式及其参数,提高了矿井生产的安全性。

The 9#and 10#coal seams of Jinda Coal Industry Co.,Ltd.belong to close distance coal seams,and the overlying 9#coal seam is basically empty.The mining activities of the 9#coal seam have caused serious damage to the integrity of the 10#coal seam roof.Due to the concentrated stress formed by the protective coal pillars formed by the mining of the 9#coal seam within a certain range of its floor,the roof of the 10#coal seam working face is prone to collapse and difficult to support.Therefore,for the mining of close distance coal seams,the roadway support method and its parameters coupled with high stress fields were explored to improve the safety of mine production.